Salicaceae

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Salicaceae
Salix fragilis
Classificazione APG IV
DominioEukaryota
RegnoPlantae
(clade)Angiosperme
(clade)Mesangiosperme
(clade)Eudicotiledoni
(clade)Eudicotiledoni centrali
(clade)Superrosidi
(clade)Rosidi
(clade)Eurosidi
(clade)COM
OrdineMalpighiales
FamigliaSalicaceae
Mirb., 1815
Classificazione Cronquist
DominioEukaryota
RegnoPlantae
DivisioneMagnoliophyta
ClasseMagnoliopsida
SottoclasseDilleniidae
OrdineSalicales
FamigliaSalicaceae
Generi
vedi testo

Le Salicacee (Salicaceae Mirb., 1815) sono una famiglia di angiosperme eudicotiledoni appartenenti all'ordine Malpighiales.[1] Comprende essenze legnose (alberi o arbusti) diffuse nelle regioni temperate; sono predominanti nell'emisfero boreale mentre mancano in Oceania ed Antartide.

Descrizione

Amenti maschili di Salix
Amenti femminili di Populus

Portano foglie semplici, spiralate, decidue, alterne e stipolate.

I fiori sono unisessuali, con perianzio nullo. I fiori maschili hanno 2-5 stami in Salix e da 4 a molti (fino a 60) in Populus. I fiori femminili sono costituiti da un ovario più o meno peduncolato e supero, uniloculare, formato da due carpelli saldati e portante molti ovuli. I fiori sono riuniti in amenti unisessuali (eretti in Salix e pendenti in Populus) portati su individui diversi (piante dioiche). L'impollinazione avviene per anemogamia ma, spesso, anche per entomogamia.

I frutti sono delle capsule che portano molti semi provvisti di ciuffi di peli che favoriscono la disseminazione.

Tassonomia

In questa famiglia sono riconosciuti 55 generi:[2]

La classificazione APG IV poneva questa famiglia nell'ordine Malpighiales, mentre il sistema di Cronquist la classificava nell'ordine monotipico Salicales Lindley, 1833.[3]

Note

  1. ^ (EN) The Angiosperm Phylogeny Group, An update of the Angiosperm Phylogeny Group classification for the ordines and families of flowering plants: APG IV, in Botanical Journal of the Linnean Society, vol. 181, n. 1, 2016, pp. 1–20.
  2. ^ (EN) Salicaceae Mirb., su Plants of the World Online, Royal Botanic Gardens, Kew. URL consultato il 17 novembre 2021.
  3. ^ (EN) Cronquist A., The evolution and classification of flowering plants, Bronx, NY, New York Botanical Garden, 1988.

Altri progetti

Collegamenti esterni

Controllo di autoritàThesaurus BNCF 23809 · LCCN (EN) sh85116749 · GND (DE) 4189422-4 · BNF (FR) cb12269746f (data) · J9U (EN, HE) 987007553430505171
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